“For almost two decades, the United States has pointed abroad at countries who are exporters of extreme Islamist ideology,” Russell Travers, acting director of the National Counterterrorism Center, told an audience in Washington, D.C. “We are now being seen as the exporter of white supremacist ideology. That’s a reality with which we are going to have to deal.”

Travers said there is now a global movement of what he termed “racially motivated violent extremism,” or RMVE (pronounced “rem-vee”), fueled by a wide variety of motivations and facilitated by social media and other online communications.

“A large percentage of RMVE attackers in recent years have either displayed outreach to like-minded individuals or groups or referenced early attackers as sources of inspiration,” he said.